Boot manager doesn't show up

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I had an 250 GB ssd and 1.5 TB hdd. I want to use dual boot on my pc. I have Windows 10 on ssd and 1TB of hdd as a Local disk D:/ for windows.
Im trying to install manjaro on ssd for starting fast and store my programs, folders etc. on hdd.
I seperated 2.5GB on ssd and used 512mb fat32 file system mounted to /boot/efi and flagged boot, 2gb for swap. On the hdd i made 30gb ext4 file system mounted to / flagged as root and the remaining memory mounted to /home as ext4.
But when i try to reboot my pc GRUB bootloader doesn’t show up so it boots up windows directly.
I searched for that but i couldn’t did.

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can you boot on USB iso manjaro
open a terminal and a browser on this topic
and reports

inxi -Mxa
test -d /sys/firmware/efi && echo efi || echo bios
sudo parted -l
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inxi -Mxa

Machine: Type: Laptop System: MONSTER product: ABRA A5 V15.5 v: Standard serial: <superuser/root required>
Mobo: MONSTER model: ABRA A5 V15.5 v: Standard serial: <superuser/root required> UEFI: American Megatrends
v: N.1.04 date: 05/25/2020

test -d /sys/firmware/efi && echo efi || echo bios

efi

sudo parted -l

Model: ATA ST1500LM006 HN-M (scsi)
Disk /dev/sda: 1500GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 1049kB 1049GB 1049GB primary ntfs
2 1049GB 1478GB 429GB primary ext4
3 1478GB 1500GB 22.2GB primary ext4

Model: Kingston DataTraveler G3 (scsi)
Disk /dev/sdb: 8007MB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
2 3079MB 3083MB 4194kB primary esp

Model: SAMSUNG MZVLQ256HAJD-00000 (nvme)
Disk /dev/nvme0n1: 256GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 1049kB 106MB 105MB fat32 EFI system partition boot, esp
2 106MB 123MB 16.8MB Microsoft reserved partition msftres
3 123MB 253GB 253GB ntfs Basic data partition msftdata
5 253GB 253GB 538MB fat32 msftdata
6 253GB 256GB 2147MB linux-swap(v1) swap
4 256GB 256GB 531MB ntfs hidden, diag

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you cant mix systems on GPT one side and MBR other side ( for linux )

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what if i use windows on ssd and linux on completely hdd ? i tried this too but still boot manager doesn’t show up

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